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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Optical fibres, optical fibre bundles & cables (excl. of 85.44) | $8,215,283 | $11,352,081 | $11,982,932 | $8,889,738 | $3,067,526 | $3,055,076 | $3,409,419 |
| Sheets & plates of polarising mat. | $18,782 | $21,335 | $33,378 | $8,131,350 | $54,470,746 | $45,191,679 | $24,709,346 |
| Contact lenses | $910,465 | $1,228,677 | $1,152,974 | $2,143,927 | $2,348,798 | $2,083,385 | $1,445,043 |
| Spectacle lenses of glass, unmounted | $45,848,622 | $22,400,082 | $22,614,410 | $22,669,661 | $16,671,872 | $13,901,317 | $645,349 |
| Spectacle lenses of mats. other than glass, unmounted | $127,641,647 | $114,061,761 | $152,673,400 | $188,722,401 | $166,806,505 | $160,708,827 | $42,370,253 |
| Lenses (excl. of 9001.30-9001.50), prisms, mirrors & oth. optical elements, ... | $24,886,070 | $28,940,010 | $35,007,806 | $42,091,824 | $30,075,047 | $30,925,335 | $33,188,966 |
| Total | $207,520,869 | $178,003,946 | $223,464,900 | $272,648,901 | $273,440,494 | $255,865,619 | $105,768,376 |
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